I have no idea whether it's discussed before.

If you run pestica in csh/tcsh environment, "no matlab command" error might be shown up in particular systems.

I found a workaround in that case - "Add matlab path and alias in .bashrc" even you don't use bash. In my case:

export PATH=$PATH:/Applications/MATLAB_R2015a.app/bin
alias matlab='/Applications/MATLAB_R2015a.app/bin/matlab -nodesktop'

Hope this help.

- H